Earthworking-machine.



C. -P. SGHAUPP.

EARTHWORKING MACHINE.

APPLICATION FILED JUNE 25, I910.

Patented Nov. 1, 1910.

2 SHEETS-BEBE?! 1.

'0. -F. 'SGHAUPP.

EARTHWORKING MACHINE.

APPLICATION TILED JUNE 2 6, 1910.

Patented Nov. 1,1910.

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q Ema- CHARLES F. SCHAUPP, OF WILSON, MINNESOTA.

EARTHWORKING-MACHINE.

Specification of Letters Patent.

Patented Nov. 1, 1910.

Application filed June 25, 1910. Serial No. 568,862.

To all whom it may concern.

Be it known that 1, CHARLES F. SCITAUPP, a citizen of the United States,residing at \Vilson, R. F. D. No. 1, in the county of WVinona and Stateof Minnesota, have invented certain new and useful Improvements inEarthworking-lvlachines, of which the following is a specification,reference being had to the accompanying drawings.

This invention relates to an improved earth working machine and has forits object to provide a machine of this character of comparativelysimple construction and increased efficiency in operation whereby thesoil may be thoroughly agitated or broken up and weeds or otherrancorous growths destroyed.

A further object resides in the provision of a ivotally mounted framehaving a toothed roller arranged to rotate therein and driven from thewheels of the machine and means for adjusting the frame to move theroller into and out of operative position.

A still further object of my invention is to provide a frame having twotoothed rollers mounted therein the teeth of one roller moving betweenthose of the other roller, one of said rollers being positively driven,a second wheel supported frame arranged on the tongue of the machine andhaving a crank shaft mounted to oscillate therein and connectionsbetween said wheel supported frame and the first named frame for rockingthe latter to move the rollers carried thereby into and out of operativeposit-ion.

\Vith these and other objects in view, the invention consists of thenovel features of construction, combination and arrangement of partshereinafter fully described and claimed, and illustrated in theaccompanying drawings, in which- Figure 1 is a side elevation of amachine constructed in accordance with my invention; Fig. 2 is a topplan view thereof; Fig. 3 is a section taken on the line 3-3 of Fig. 2;Fig. 4 is a detail section taken on the line 44 of Fig. 2; and Fig. 5 isa detail perspective view of one end of the crank shaft and the pivotedframe.

Referring more particularly to the drawings 5 indicates the groundwheels mounted upon the ends of an axle (3. A U-shaped frame 7 isarranged upon said axle between the wheels and the ends of said frameare transversely and downwardly disposed as shown at 7 for a purposewhich will later appear. The arms of the frame 7 are connected andbraced by means of the bar 8 to which one end of the tongue 9 issecured, said tongue extending forwardly above the intermedlate portionof said frame. Longitudinal bars 10 also connect the intermediateportion of the frame to the cross bar 8 to hold the same rigidly inposition.

Bars 11 are pivoted to the ends of the U- shaped frame and extendbeneath the wheel axle forwardly and rearwardly thereof. In the rearends of these bars the cylinder shaft 12 is mounted on which is securedthe tooth cylinder 13. A pair of links 1 1 are pivoted to each of. thebars 11 forwardly of the cylinder 13 and in the lower ends of theselinks the ends of a second cylinder shaft 15 are rotatably mounted. Thisshaft carries a second tooth cylinder 16 of smaller diameter than thecylinder 13. One of the links of each pair is formed in two pivotallyconnected sections as shown at 17 and to one of said sections the end ofa link 18 is connected, the other end of which is pivoted to the bar 11.On the links 18, coiled springs 19 are arranged and serve to yieldinglyhold the teeth of the cylinder 16 in engagement with the ground.

The cylinders 15 and 16 are formed from a plurality of parallellongitudinal bars 20 rigidly supported on their respective shafts bymeans of the braces 21. To the bars 20 the teeth 22 are secured. Theseteeth are conical in form and are reduced at one end to provide thethreaded studs 23 which are adapted to be disposed through apertures inthe bars and receive the nuts 24 whereby the teeth are secured inposition.

The cylinder 13 is positively driven through the medium of the drivingchains 24 which pass around the sprockets 25 carried by the groundwheels and the pinions 26 secured on the ends of the cylinder shaft 12.The rear ends of the bars 11 are formed with a plurality of openings 27to receive the cylinder shaft so that the roller may be readily adjustedin said bars to take up the slack in the driving chains.

In order to prevent undue shock to the cylinder 13 when traveling overrough ground I provide the crank shaft 28 mounted in the U-shaped frame7 and on the tongue of the machine. To the ends of this crank shaft themembers 29 are pivoted at theirupper ends. These members areeach 1formed with a cylindrical shank 29 which engagement with the teeththereof whereby the lever is held in its adjusted position. It will beobvious from the above description that when the lever is movedrearwardly, the crank shaft will be rotated to elevate the forward endsof the barsll and force the teeth of the cylinder 13 into contact withthe ground and when the lever is moved forwardly the cylinder 13 will beraised to an inoperative position.

A drivers seat 35 is mounted upon the tongue 9 in position for thedriver to readily grasp and manipulate the lever 32.

From the foregoing it will be seen that I have provided a comparativelysimple and novel construction in a machine of this character whereby theground may be thoroughly broken up. The machine is particularly adaptedfor uprooting what is commonly known as crab grass which grows veryclose to the ground and is extremely diflicult to eradicate from thesoil. It will be noted that the teeth on one cylinder pass between thoseupon the other thus thoroughly covering the entire ground surface overwhich the machine moves.

WVhile I have described a preferred con struction of the rollers 13 and16, it will be understood that they may be otherwise formed if desired.Many other minor modifications in the form, proportions and details ofconstruction of the various parts may also be resorted to withoutdeparting from the essential features or sacrificing any of theadvantages of my invention.

Having thus described the invention what is claimed is 1. Thecombination with a wheeled frame, of bars pivoted on said frameintermediate of their ends, tooth carrying cylinders rotatably supportedby said bars, means for positively rotating one of said cylinders, meansfor yieldingly maintaining the teeth of the other cylinder in contactwith the ground, and. means for oscillating said bars to move thecylinders to operative and inoperative position.

2. The combination with a wheeled frame, of bars pivoted on said frameintermediate of their ends, a toothed cylinder adjustably oted bars,means normally holding the teeth of the latter cylinder yieldingly incontact with the ground, and means mounted in the wheeled frame foroscillating said bars to move said cylinders to operative andinoperative position.

3. The combination with a wheeled frame, of bars pivoted on said frameintermediate of their ends, a toothed cylinder carried by said bars,means for rotating said cylinder, hanger links pivoted to said bars andde-. pending therefrom, a second toothed cylinder rotatably mounted inthe lower ends of said links, springs arranged between said bars andlinks to yieldingly hold the teeth of said cylinder in engagement withthe ground, the teeth of one cylinder passing between the teeth on theother cylinder as the cylinders rotate, and means mounted in said framefor moving the cylinders to operative and inoperative position.

a. The combination with driving wheels and an axle connecting the same,of a U.- shaped frame supported at its ends on said axle, the ends ofsaid frame extending downwardy below the axle, a bar pivoted to each endof the frame and extending forwardly and rearwardly of the drivingwheels, a pair of toothed cylinders rotatably mounted between the rearends of said bars, means for positively rotating one of said cylinders,independent means for yieldingly supporting said cylinders in operativeposition, and means for moving said cylinders to operative andinoperative position.

5. The combination with driving wheels and an axle connecting the same,of a U- shaped frame secured at its ends upon said axle, a bar pivotedto each end of said frame and extending rearwardly thereof, spacedtoothed cylinders rotatably mounted between the rear ends of said bars,the teeth on one cylinder being adapted to pass between those on theother cylinder, means for positively rotating one of said cylinders,springs arranged at each end of the othercylinder beneath said bars foryieldingly holding the teeth of said cylinderin contact with the ground,and means for simultaneously moving said cylinders to operative andvinoperative position.

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses. CHARLES. F. SCHAUPP. Vitnesses JAMEs G. ROBERTSON,

B. C. Orson.

